Saw-filer.



No; 724,38 I PATBNTED APR. 7, 1903; D. L. KBLGHNER.

SAW FILER. APPLICATION FILED AUG. 16, 1902.

N0 MODEL.

2 SHEETS-411E151 l.

WITNESSES: V v yNVENmRi #T l ZZ'ZC/EIZGZ I 4 I ATTORNEYS. 1

mm. wAsummn n r PATBNTED APR. 7, 1903.

2 SHEETS-SHEET 2..

I n. L. KELCHNER. SAW FILER. APPLICATION FILED AUG. 16, 1902.

no MODEL.

W/ TNESSES.'

UN TED STATES PATENT OFFICE.

DAVID L. KELOI-INER, OF BROOKLYN, NEl/V YORK.

. SAW-FILER.

SPECIFICATION forming part Of Letters Patent No. 724,883, dated April 7,1903.

Application filed August 16, 1902. Serial No. 119,883. (No model.) i

To all whom, it may concern;

Be it known that 1, DAVID L. KELcHNER, a citizen of the United States,and a resident of the city of New York, borough of Brooklyn, in thecounty of Kings and Stateof New York, have invented new and usefulImprovements in Saw-Filers, of which the following is a full, clear, andexact description.

This invention relates to improvements in machines for filing saws, theobject being to provide a machine of this character of simpleconstruction and by means of which a saw may be quickly and uniformlyfiled.

I will describe a saw-filer embodying my invention and then point outthe novel features in the appended claims.

Reference is to be had to the accompanying drawings, forminga partofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a front elevation of a saw-filer embodying my invention.Fig. 2 is a sectional plan View on the line 2 2 of Fig. 1. Fig. 3 is asectional detail view showing the saw-guide, and Fig. 4 is a plan viewshowing the file and its carrier.

Referring to the drawings, 5 designates a base-frame, on the end ofwhich are jaws 6 7, and in one of the jaws, here shown as the jaw 7, isa clamping-screw 8, by means of which the device may be secured to atable or other support. Supported in the frame 5 are feeding-disks 9 10,these feeding-disks rotating in a horizontal plane, the feeding-disk 9being attached to a shaft 11, having hearings in the frame 5, and theshaft 12of' the disk '10 has bearings in a block 13, adjustable in theframe, so as to regulate the distance between the feeding-disks.The-disk 10 is moved toward the disk 9 by means of a screw 14, passingthrough the outer end of the frame 5 and engaging with said block 13.

On the lower end of the shaft 12 is a gearwheel 15, meshing with agear-wheel 16 on the shaft 11, and this gear-wheel 16 is designed toengage with and be operated by a worm-wheel 17.

Arranged underneath the feeding-disks is a guide for the saw comprisingan exteriorlythreaded lug 18, whichis vertically split to receive thesaw-blade, asclearly shown in Fig. 1, and the plane of the teeth isregulated by means of an interiorly-threaded ring 19 on the lug 18.

An arm-20 is extended upward and at a forwardcurve from the rear portionof the frame 5,, and mounted to rotate on this arm is a wheel-likefile-carrier 21, on which is removably mounted a longitudinally-curvedor segmental file 22. t f

Mounted rigidly on the shaft ofthe wormwheel 17 is a ratchet-wheel 23,engaged by a pawl 24, mounted on an arm 25, arranged to swing loosely onthe shaft of theworm-wheel and pressed yieldingly against theratchetwheel by means of a spring 26. From the outer end of the arm 25 apitman 27 extends upward and connects with an operating-handle 28 on therotary part 21.

To facilitate the insertion of asaw-blade between the feeding-disks, thecarrier or rotary part 21 is provided with a slit or kerf 29, in whichthe blade may pass. In operation when the slit or kerf 29 is in positionat the forward side of the feeding-disk the blade may be insertedtherein and then the carrier or rotary part moved to bring the saw-bladein line with the space between the feeding- 7 Then of course the bladeis to be passed between said disks and into the lug disks.

18, the adjusting device 19 having previously been moved so as to causea proper projection of the saw-teeth. Now upon rotating the carrier 21the file 22 will pass between the two teeth of the blade and file thesame. After the complete file passes between the teeth the pitman 27will cause a downward swinging movement of the arm, and consequently,through the pawl-and-ratchet mechanism, will impart a slight rotarymovement to the worm-wheel, which through the medium of the gears 15 and16 will rotate the disks 9 and 10 sufficiently to move the sawbladetobring the next teeth in position for receiving a file.

It will be noted that the file 22 is connected with the carrier orrotary part by means of screws. Therefore when a file becomes worn outit is readily replaced by a new one.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a saw-filer, a rotary part having a slit orkerf to receive a saw-plate, a segmental file carried by the rotarypart, horizontallydisposed feeding-disks below the rotary part, drivingconnections between said disks and the rotary part and an adjustingdevice below the disks.

2. A saw-filer comprising a rotary part, a longitudinally-curved filercarried by the rotary part, feeding-disks, gear connections between thedisks, a worm-wheel engaging with one of the gears, and means operatedfrom the rotary part for imparting intermittent motion to theworm-wheel.

3. A saw-filer comprising a frame, a rotary part supported on the frame,a segmental file carried by said rotary part, feeding-disks attached tovertically-disposed shafts in the frame, meshing gears on the lower endsof saidshafts, a worm-wheel engaging with one of said gears, aratchet-wheel fixed to the side of said worm-wheel, an arm mounted toswing on the shaft, a spring-pressed pawl carried by the arm andengaging with the ratchetwheel, and a pitman connection between the armand rotary part.

4. A saw-filer comprising a frame, an arm extending upward from saidframe, a rotary part mounted on said arm, a segmental file carried onthe periphery of the rotary part, and feeding-disks arranged to rotatein a horizontal plane, means operated from the rotary part for operatingsaid disks, a guide below the disk, and a stop-ring adjustablevertically on said guide.

5. Asaw-filer comprising a frame, a clamping device on the frame, an armextending upward from said frame, a rotary part mounted on the arm, asegmental file carried by the rotary part, said rotary part beingprovided with a slit or kerf, feeding-disks mounted to rotate in ahorizontal plane, one of said disks being adj ustable'toward and fromthe other, a vertically-slitted lug arranged below the disks and havingan exterior screw-thread, a ring engaging with said screw-thread, andmeans operated from the rotary part for imparting step-by-step rotarymotion to the disks.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

DAVID L. KELOHNER.

Witnesses:

JNo. M. RITTER, C. R. FERGUSON.

